Tess has the right idea...start with what fragrance oils you already have and then add some based on suggestions from your customers. Get really good at what you do and stay focused and start small. Then you can expand and add different items with time. It is so easy to try to do alot of different types of candles right off and not put out a really good, consistent product. Listening to what your customer wants is the best way to determine what you will be adding to your product line!!!